CHO CÁC ĐIỂM PHÂN BIỆT A B C, , . ĐẲNG THỨC NÀO SAU ĐÂY ĐÚNG

Lớp 10 Toán Đề thi giữa học kì 1 Toán 10 năm 2021 - 2022 trường THPT Ngô Gia Tự - Đắk Lắk -

Nội dung
Đáp án tham khảo

Câu 17. Cho các điểm phân biệt

^{A B C}

^{, ,}

. Đẳng thức nào sau đây đúng ?

A.

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^{AB BC CA}

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

.

B.

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^{AB BC AC}

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

.

C.

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^{AB C}

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^A

^

^CB

.

D.

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^{AB CB AC}

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

.